import requests

url = "https://www.ems.com.cn/pc/login/index"

querystring = {"_url":"LyMv","from":"emsnew"}

payload = "{\n\t\"content\":\"dawd\",\n\t\"code\":\"dawdaw\",\n\t\"courier\":\"dawdaw\"\n}"
headers = {
    'user-agent': "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.36",
    'Host': "www.ems.com.cn",
    'Referer': "https://www.ems.com.cn/pc/main/new",
    'Cookie': "SESSION=f4538ad0-ad3e-432a-9b25-dfbe74e59288",
    'Cache-Control': "no-cache",
    'Postman-Token': "193fcb68-4a42-431f-a265-f5a6d52f7c7f"
    }

response = requests.request("GET", url, data=payload, headers=headers, params=querystring)

print(response.text)